How to prevent scum
Brent Allred added on July 27, 2017 | Answered
Check here if you would like to receive notifications every time this question is answered.
You are subscribed to receive notifications whenever this question is answered.
Answered on July 27, 2017
Change the water daily and periodically blast it with the hose. (sandblasting with water, essentially) Birds like shallow water and a rock or two to stand on. Pet stores carry products supposedly safe for birds which prevent algae.
Was this answer useful?